1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6 /* WARNING: this file should *not* be used by applications. It is 7 part of the implementation of the compression library and is 8 subject to change. Applications should only use zlib.h. 9 */ 10 11 /* @(#) $Id$ */ 12 13 #ifndef ZUTIL_H 14 #define ZUTIL_H 15 16 #ifdef HAVE_HIDDEN 17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 18 #else 19 # define ZLIB_INTERNAL 20 #endif 21 22 #include "zlib.h" 23 24 #if defined(STDC) && !defined(Z_SOLO) 25 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 26 # include <stddef.h> 27 # endif 28 # include <string.h> 29 # include <stdlib.h> 30 #endif 31 32 #ifndef local 33 # define local static 34 #endif 35 /* since "static" is used to mean two completely different things in C, we 36 define "local" for the non-static meaning of "static", for readability 37 (compile with -Dlocal if your debugger can't find static symbols) */ 38 39 typedef unsigned char uch; 40 typedef uch FAR uchf; 41 typedef unsigned short ush; 42 typedef ush FAR ushf; 43 typedef unsigned long ulg; 44 45 #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) 46 # include <limits.h> 47 # if (ULONG_MAX == 0xffffffffffffffff) 48 # define Z_U8 unsigned long 49 # elif (ULLONG_MAX == 0xffffffffffffffff) 50 # define Z_U8 unsigned long long 51 # elif (UINT_MAX == 0xffffffffffffffff) 52 # define Z_U8 unsigned 53 # endif 54 #endif 55 56 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 57 /* (size given to avoid silly warnings with Visual C++) */ 58 59 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 60 61 #define ERR_RETURN(strm,err) \ 62 return (strm->msg = ERR_MSG(err), (err)) 63 /* To be used only when the state is known to be valid */ 64 65 /* common constants */ 66 67 #ifndef DEF_WBITS 68 # define DEF_WBITS MAX_WBITS 69 #endif 70 /* default windowBits for decompression. MAX_WBITS is for compression only */ 71 72 #if MAX_MEM_LEVEL >= 8 73 # define DEF_MEM_LEVEL 8 74 #else 75 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 76 #endif 77 /* default memLevel */ 78 79 #define STORED_BLOCK 0 80 #define STATIC_TREES 1 81 #define DYN_TREES 2 82 /* The three kinds of block type */ 83 84 #define MIN_MATCH 3 85 #define MAX_MATCH 258 86 /* The minimum and maximum match lengths */ 87 88 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 89 90 /* target dependencies */ 91 92 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 93 # define OS_CODE 0x00 94 # ifndef Z_SOLO 95 # if defined(__TURBOC__) || defined(__BORLANDC__) 96 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 97 /* Allow compilation with ANSI keywords only enabled */ 98 void _Cdecl farfree( void *block ); 99 void *_Cdecl farmalloc( unsigned long nbytes ); 100 # else 101 # include <alloc.h> 102 # endif 103 # else /* MSC or DJGPP */ 104 # include <malloc.h> 105 # endif 106 # endif 107 #endif 108 109 #ifdef AMIGA 110 # define OS_CODE 1 111 #endif 112 113 #if defined(VAXC) || defined(VMS) 114 # define OS_CODE 2 115 # define F_OPEN(name, mode) \ 116 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 117 #endif 118 119 #ifdef __370__ 120 # if __TARGET_LIB__ < 0x20000000 121 # define OS_CODE 4 122 # elif __TARGET_LIB__ < 0x40000000 123 # define OS_CODE 11 124 # else 125 # define OS_CODE 8 126 # endif 127 #endif 128 129 #if defined(ATARI) || defined(atarist) 130 # define OS_CODE 5 131 #endif 132 133 #ifdef OS2 134 # define OS_CODE 6 135 # if defined(M_I86) && !defined(Z_SOLO) 136 # include <malloc.h> 137 # endif 138 #endif 139 140 #if defined(MACOS) || defined(TARGET_OS_MAC) 141 # define OS_CODE 7 142 # ifndef Z_SOLO 143 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 144 # include <unix.h> /* for fdopen */ 145 # else 146 # ifndef fdopen 147 # define fdopen(fd,mode) NULL /* No fdopen() */ 148 # endif 149 # endif 150 # endif 151 #endif 152 153 #ifdef __acorn 154 # define OS_CODE 13 155 #endif 156 157 #if defined(WIN32) && !defined(__CYGWIN__) 158 # define OS_CODE 10 159 #endif 160 161 #ifdef _BEOS_ 162 # define OS_CODE 16 163 #endif 164 165 #ifdef __TOS_OS400__ 166 # define OS_CODE 18 167 #endif 168 169 #ifdef __APPLE__ 170 # define OS_CODE 19 171 #endif 172 173 #if defined(_BEOS_) || defined(RISCOS) 174 # define fdopen(fd,mode) NULL /* No fdopen() */ 175 #endif 176 177 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 178 # if defined(_WIN32_WCE) 179 # define fdopen(fd,mode) NULL /* No fdopen() */ 180 # else 181 # define fdopen(fd,type) _fdopen(fd,type) 182 # endif 183 #endif 184 185 #if defined(__BORLANDC__) && !defined(MSDOS) 186 #pragma warn -8004 187 #pragma warn -8008 188 #pragma warn -8066 189 #endif 190 191 /* provide prototypes for these when building zlib without LFS */ 192 #if !defined(_WIN32) && \ 193 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 194 ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t); 195 ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t); 196 ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t); 197 #endif 198 199 /* common defaults */ 200 201 #ifndef OS_CODE 202 # define OS_CODE 3 /* assume Unix */ 203 #endif 204 205 #ifndef F_OPEN 206 # define F_OPEN(name, mode) fopen((name), (mode)) 207 #endif 208 209 /* functions */ 210 211 #if defined(pyr) || defined(Z_SOLO) 212 # define NO_MEMCPY 213 #endif 214 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 215 /* Use our own functions for small and medium model with MSC <= 5.0. 216 * You may have to use the same strategy for Borland C (untested). 217 * The __SC__ check is for Symantec. 218 */ 219 # define NO_MEMCPY 220 #endif 221 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 222 # define HAVE_MEMCPY 223 #endif 224 #ifdef HAVE_MEMCPY 225 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 226 # define zmemcpy _fmemcpy 227 # define zmemcmp _fmemcmp 228 # define zmemzero(dest, len) _fmemset(dest, 0, len) 229 # else 230 # define zmemcpy memcpy 231 # define zmemcmp memcmp 232 # define zmemzero(dest, len) memset(dest, 0, len) 233 # endif 234 #else 235 void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len); 236 int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len); 237 void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len); 238 #endif 239 240 /* Diagnostic functions */ 241 #ifdef ZLIB_DEBUG 242 # include <stdio.h> 243 extern int ZLIB_INTERNAL z_verbose; 244 extern void ZLIB_INTERNAL z_error(char *m); 245 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 246 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 247 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 248 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 249 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 250 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 251 #else 252 # define Assert(cond,msg) 253 # define Trace(x) 254 # define Tracev(x) 255 # define Tracevv(x) 256 # define Tracec(c,x) 257 # define Tracecv(c,x) 258 #endif 259 260 #if !defined(Z_SOLO) || defined(_KERNEL) 261 voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, 262 unsigned size); 263 void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr); 264 #endif 265 266 #define ZALLOC(strm, items, size) \ 267 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 268 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 269 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 270 271 /* Reverse the bytes in a 32-bit value */ 272 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 273 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 274 275 #endif /* ZUTIL_H */ 276